Aquatic full shade?

in Plants
Hi all, my new preformed pond is looking barren. Can you suggest a few aquatic plants that might be happy in full but light shade? The photo is taken facing south, so the wall is going to block all light. Some might get through in late afternoon, but I wouldn't be able to count on it 



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I also had Equisetum in my small pond, which was quite shady. It's fine too. A good vertical for contrast. Not a nuisance like the usual horsetail
Cotton grass will also be fine. Again - I can't recall the proper name, but it's easy enough to find under that. It grows in boggy soil as well as directly in water.
Caltha [marsh marigold] will do a similar job, but is best for the margins/boggy soil, rather than in the water itself
The curled rush [Juncus e. spiralis] is also fine in shade.
If you have a look on those sites, you'll get other suggestions for suitable plants for a shady spot.
There are some mini water lillies too ( sorry can't remember the actual variety ) which may like that aspect.
Cyperus would give you some height but can be a bit too happy in such a small pond so the Equisetum as per @Fairygirl would be the best bet.
I've had mine for years. E. hyemale or E. japonica are the same plant - one is the old name.